Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for making a fastener

a technology of fasteners and threads, applied in the field of fasteners, can solve the problems of less flexibility and less than optimal use performance, and achieve the effect of enhancing the pullout resistan

Inactive Publication Date: 2005-10-18
ILLINOIS TOOL WORKS INC
View PDF49 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an improved fastener design that addresses various needs. The fastener has a lead with multiple bosses separated by recesses. The bosses can be identical or varied along the length of the lead. The recesses can collect materials like plastic or concrete. The lead-out of the bosses enhances pullout resistance. The fastener is suitable for a wide range of applications, including metals, plastics, wood, and concrete. It is also suitable for mass production.

Problems solved by technology

In general, however, these designs have presented less flexibility and less than optimal performance in use.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for making a fastener
  • Method for making a fastener
  • Method for making a fastener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021]Turning now to the figures, and referring first to FIG. 1, an exemplary fastener formed in accordance with aspects of the present technique is illustrated and designated generally by the reference numeral 10. Fastener 10 includes a head 12 a tip 14, and a threaded shank section 16. Any suitable head and tip portion may be employed in the fastener, such as the hex head illustrated in FIG. 1. The tip portion may be similar in diameter to the threaded shank portion, or may be profiled, such as to facilitate insertion into certain materials.

[0022]In the illustrated embodiment, fastener 10 has one or more leads which are configured in accordance with aspects of the present technique. In the embodiment illustrated in FIG. 1, two such leads 18 and 20 are provided and have similar or identical configurations, displaced 180 degrees at corresponding locations along shank 16. As described below, the configurations may also be different between the multiple leads, where such multiple lead...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
surface featuresaaaaaaaaaa
radial dimensionaaaaaaaaaa
dimensionsaaaaaaaaaa
Login to View More

Abstract

In accordance with one embodiment, the present technique provides a method for making a threaded fastener. The method includes that act of forming a die-making tool having surface features that correspond to the desired crest and flank profiles of a thread of the threaded fastener. The exemplary method also includes that act of forming a roll threading die via electric discharge machining of a die blank with the formed die-making tool.

Description

[0001]This application is a division of U.S. application Ser. No. 09 / 885,796, filed Jun. 19, 2001 now U.S. Pat. No. 6,899,500.BACKGROUND OF THE INVENTION[0002]The present invention relates generally to the field of fasteners, and more particularly to a fastener having at least one lead form with multiple bosses to provide improved insertion and pullout properties.[0003]In the field of fasteners, particularly threaded fasteners, a wide range of configurations are known and currently available. In general, threaded fasteners present a threaded shank on which one or more leads are formed. The leads create a helical inclined plane which contacts mating surfaces of one or more mechanical components as the fastener is rotated for insertion or removal. Various threaded fastener designs have been specifically adapted for use with various materials, such as wood, metals, composite materials, concrete, and so forth.[0004]In most conventional threaded fasteners, a head is formed at the end of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): B21H3/06B21H3/02B21H3/00F16B25/00F16B33/00F16B33/02
CPCB21H3/02B21H3/06F16B25/0031F16B25/0052B21H3/027
Inventor LEVEY, KENNETHDOHM, STEPHEN
Owner ILLINOIS TOOL WORKS INC